[R-meta] Accounting for baseline differences in meta-analysis
Dr. Gerta Rücker
ruecker @end|ng |rom |mb|@un|-|re|burg@de
Thu Jan 28 12:35:05 CET 2021
An obvious approach would be to take the post values (or, equivalently,
the change scores) as an outcome, and the baseline values as a covariate
in a metaregression model.
Am 28.01.2021 um 10:49 schrieb Gladys Barragan-Jason:
> Dear all,
> I would like to know how to take the baseline difference into account
> in meta-analysis of the impact of a treatment on experimental data in
> which the baseline of the control group is different from the baseline
> of the treatment.
> For now, I am using the post- means and SD of the control and the
> treatment group (and the rma.mv <http://rma.mv> function) and also the
> pre-post values of the treatment group but I don't think this is
> correct and I am not sure how to proceed.
> Any advice?
> Thanks a lot in advance.
> Best regards,
> Gladys Barragan-Jason, PhD. Website
> Station d'Ecologie Théorique et Expérimentale (SETE)
> CNRS de Moulis
> R-sig-meta-analysis mailing list
> R-sig-meta-analysis using r-project.org
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